Dietary Supplement Supports join health. Glucosamine and chondroitin sulfate are fundamental components of joint tissue involved in the production of hyaluronic acid, which is an important component of the synovial fluid that lubricates the joints and a major component of the connective tissue in the skin. Vitamin C and manganese are required for the synthesis of collagen and cartilage. Jarrow Formulas glucosamine sulfate is sodium free and stabilized with potassium chloride (KCI). No wheat, gluten, soybeans, dairy, egg, fish, or peanuts/tree nuts. www.Jarrow.com. For best results, use with Jarrow Formulas JarroSil, the biologically Activated Silicon. (These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.)